feat: robust metric extraction with confidence score and proof snippets

- fixed Year-Prefix Bug in MetricParser
- added metric_confidence and metric_proof_text to database
- added Entity-Check and Annual-Priority to LLM prompt
- improved UI: added confidence traffic light and mouse-over proof tooltip
- restored missing API endpoints (create, bulk, wiki-override)

company-explorer/frontend/node_modules/@nodelib/fs.scandir/out/constants.d.ts

@@ -0,0 +1,4 @@
+/**
+ * IS `true` for Node.js 10.10 and greater.
+ */
+export declare const IS_SUPPORT_READDIR_WITH_FILE_TYPES: boolean;